Combined measurement of differential and total cross sections in the $H\to \gamma \gamma$ and the $H\to Z{Z}^{\ast }\to 4\ell$ decay channels at $\sqrt{s}=13$ TeV with the ATLAS detector

Abstract

A combined measurement of differential and inclusive total cross sections of Higgs boson production is performed using 36.1 fb${}^{-1}$ of 13 TeV proton-proton collision data produced by the LHC and recorded by the ATLAS detector in 2015 and 2016. Cross sections are obtained from measured $H\to \gamma \gamma$ and $H\to Z{Z}^{\ast }\to 4\ell$ event yields, which are combined taking into account detector efficiencies, resolution, acceptances and branching fractions. The total Higgs boson production cross section is measured to be 57.0${}_{-5.9}^{+6.0}$ (stat.) ${}_{-3.3}^{+4.0}$ (syst.) pb, in agreement with the Standard Model prediction. Differential cross-section measurements are presented for the Higgs boson transverse momentum distribution, Higgs boson rapidity, number of jets produced together with the Higgs boson, and the transverse momentum of the leading jet. The results from the two decay channels are found to be compatible, and their combination agrees with the Standard Model predictions.

33 pages in total, author list starting page 17, 2 figures, 3 tables, submitted to PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2017-11

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• Measurements of the Higgs boson inclusive and differential fiducial cross sections in the 4$\ell$ decay channel at $\sqrt{s}$ = 13 TeV
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• Towards a new approximation for pair-production and associated-production of the Higgs boson
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• Higgs decay into a lepton pair and a photon revisited
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• Efficient Fourier Transforms for Transverse Momentum Dependent Distributions
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